Ok folks here is what F1 Marbles come out like, these are from a pair of Black marbles, the parents had only 2 colors, Black and Flesh tone.

I will post the cellos and Butterflys soon also...as you can see, not any black or any resembelance to the parents what so ever..they were black and tan.
The female had slight dragon scaling on half of her.

No the F1 will not show marble, at least I have never seen them unless a marble was crossed to a solid the f1 shows marble.
These will more than likely stay Cambo, but when I do a sibling cross I will see the Black marble again.
There has been debate on marbles here but I go by what I have seen and what I was taught..so others may have a different answer...but..I have never seen one betta yet that could read hehehe

I was told if you wanted to breed marble not to mix marble with marble (I think maybe you even told me that Darth! Lol.) So I mixed my grizzle with a solid irid girl, so I'll see if I get any! Can't wait to see your F2 spawn!!!!

11 weeks, they are at the stage when they are fully colored and take forever to get past this stage, mini bettas...haha evem the ;itt;e females will show bars and they all flare but are just mini fish and it takes them forever to get past this...hahaha